Sash-lock.



.T. B. JOHNSON.

SASH LOCK.

APPLIoATIoN FILED AUG. 1a, 1910.

992.777, Patented May 23, 1911.

@n--25 .l l a/ 75 705 Z0 l 7j 95 :777, 09a/M atroz/neng JAMES B. JOHNSON, OF .ALBIA, IOWA.

sasrrrioox.

Specification of Letters Patent.

Patented May To all whom 'ti may concern:

Be it known that 1, JAMES B. JOHNSON, a citizen of the United States, residing at Albia, in the county of Monroe and State of Iowa, have invented certain new and usefull Improvements in Sash-Locks, of

' which thefollowing is a specication, reference being had to the accompanying drawings.

rilhis invention is an improved sash bolt or sash fastener adapted for locking the lower sash in any desired position.

rl`he invention consists in the construction, combination and arrangement of devices 'hereinafter described and claimed.

In the accompanying.drawingsFigure 1 is a perspective view-of a portion of one side of a window frame or casing, and of portions of the window sashes therein provided With a sash fastener or bolt constructed in accordance with my invention. Fig. 2 is partly an elevation and partly a longitudinal central sectional view of ay sash fastenereonstructed in accordance with my invention. -Fig' 3 is a transverse sectional view of the same on the plane indicated by the line a-a of Fig. Q. Fig. f1 is a similar view on the plane indicatedl by the line b-b of Fig. 2. Fig. 5 is a dota-il perspective view of the hook. i

n accordance with my invention, provide a base plate'l, 'of suitable size and shape, which inA practice is secured on the upper side of a lower sash A near one side thereof, the said plate being shown as provided with openings for the reception of 'se- Said plate is provided curing screws 2. on the side next the .upper sash B with an olf-set 3, and on the said plate is pivotally mounted a locking hook 1-which is provided with .a finger' piece 5. rl `he portion 3 of the base plate extends` acrossthe crack or space-between the upper' and .lower sashes, and serves as a guard to prevent the hook 3 from being operated from the outside by an instrument inserted tl'n'ough said crack or space. f

The plate 1 is provided near its ends with openings for thereception ofstuds 6 which are formed on the lower edges of :tront and' rear guide and keeper plates '7, 8 and the said studs are up-set on the -inner side ot.

Application led August 13, 1910. Serial No. 577,033.

the plate 1, so as to secure the said guide and keeper plates thereto. The said guide and keeper plates are provided with openings 9, 10 respectively. for the reception of a-bolt 11, which is movable longitudinally in said openings, and has one end shaped as at 12 or otherwise suitably shaped to facilitate its engagement with any one of-a series of openings 13 in one side of the window casing C. Tubular metallic linings 14 are in practice preferably placed in the saidv openings, to prevent wear ofthe sides thereof. A coiled extensile spring 15 is placed on the bolt 11. One end of the said spring bears against the rear guide plate 8.` The other end thereof bears against a. pin 16, which extends transversely through the bolt, the 'function of thesaid spring, as will be understood, being to normally hold the bolt in engaged position, with one of the openings 13 in thewindow casing, to hold the lower sash in adjusted position. .to secure the bolt 11 in either engaged or withdrawn position, I provide a set-screw In. order I 17 which operates in a screw threaded transverse opening with which the said bolt is 'providechand which may be moved into engagement with either of the openings 18, 19 with which said plate 1 is provided. In order to .prevent the bolt from turning and rendering it diliicultto engage the set screw with the said openings, I, provide the said bolton oneV side with a longitudinal groove 2t) which receives a stud Q1 wit-h 'which the rear guide plate S is provided, the said stud extending into one side of the opening -10 in said guide plate.

On the'uppor' side ot' the lower bar of the upper sash l secure a plate Qwhich is 'provided with a catch .23 that extends upwardly 'therelirchm which catch may be readily engaged by the hook l, and when thus engaged, coacts with said Hhook to secure they upper and lower -sashes together. Assuming also that the lower sash has been locked by' the bolt 11, it will be understoodt'hat when the hook 4t is engaged with the catch 23 neither of the sashes can be moved.

openings therein, and also provided with guides, said `guides being provided with adapted for engagement with either of said openings, and one of said guides alsohaving locking' openings. 10

a Stud extending into one sidev of thel open- In testimony Whereof'I hereunto affix my ing therein, a locking bolt movable longi signature in the presence of two Witnesses.

5 tudinally in said openings, and having a JALIES B. JOHNSON.

longitudinal groove engaged by the said Vitnesses: stud and thereby prevented from turning, W. J VAN DYKE,

and a. set screw carried by said bolt and FRED NEWE'LL. 

